Misc::encoding( string $charset ): string

378    public static function encoding($charset)379    {380        // Normalization from UTS #22381        switch (strtolower(preg_replace('/(?:[^a-zA-Z0-9]+|([^0-9])0+)/', '\1', $charset))) {382            case 'adobestandardencoding':383            case 'csadobestandardencoding':384                return 'Adobe-Standard-Encoding';385 386            case 'adobesymbolencoding':387            case 'cshppsmath':388                return 'Adobe-Symbol-Encoding';389 390            case 'ami1251':391            case 'amiga1251':392                return 'Amiga-1251';393 394            case 'ansix31101983':395            case 'csat5001983':396            case 'csiso99naplps':397            case 'isoir99':398            case 'naplps':399                return 'ANSI_X3.110-1983';400 401            case 'arabic7':402            case 'asmo449':403            case 'csiso89asmo449':404            case 'iso9036':405            case 'isoir89':406                return 'ASMO_449';407 408            case 'big5':409            case 'csbig5':410                return 'Big5';411 412            case 'big5hkscs':413                return 'Big5-HKSCS';414 415            case 'bocu1':416            case 'csbocu1':417                return 'BOCU-1';418 419            case 'brf':420            case 'csbrf':421                return 'BRF';422 423            case 'bs4730':424            case 'csiso4unitedkingdom':425            case 'gb':426            case 'iso646gb':427            case 'isoir4':428            case 'uk':429                return 'BS_4730';430 431            case 'bsviewdata':432            case 'csiso47bsviewdata':433            case 'isoir47':434                return 'BS_viewdata';435 436            case 'cesu8':437            case 'cscesu8':438                return 'CESU-8';439 440            case 'ca':441            case 'csa71':442            case 'csaz243419851':443            case 'csiso121canadian1':444            case 'iso646ca':445            case 'isoir121':446                return 'CSA_Z243.4-1985-1';447 448            case 'csa72':449            case 'csaz243419852':450            case 'csiso122canadian2':451            case 'iso646ca2':452            case 'isoir122':453                return 'CSA_Z243.4-1985-2';454 455            case 'csaz24341985gr':456            case 'csiso123csaz24341985gr':457            case 'isoir123':